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What are the requirements for building a holding furnace

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wyb2020:
In the molten pool part of the furnace body, a 5 mm insulating asbestos plate is lined between the steel plate and the refractory material. https://www.vacfurnace.com/technology-frontiers/the-function-and-the-production-of-ceramic-bulletproof-vest/The molten pool is made of ordinary clay refractory bricks to form a rectangle. https://www.vacfurnace.com/technology-frontiers/casting-vacuum-heat-treatment-process/Clay bricks with a square inner circle are prepared to be embedded in the graphite base. The upper part of the front wall should only be built with 130 mm thick clay bricks and asbestos boards, because graphite plug rods need to be installed here. If the front wall is too thick, the graphite base will grow. https://www.vacfurnace.com/technology-frontiers/copper-wire-workshop-design-and-vacuum-heat-treatment/which affects the premature drop of the liquid metal temperature during drawing. Practice has proved that the front wall is too thick to be unfavorable for drawing. The side walls and rear walls on both sides can be built with 130 mm thick refractory bricks. The gap between the bricks and the furnace shell Filled with quartz sand, the bottom of the molten pool can be built with refractory bricks of about 200 mm and cushioned with quartz sand, which should be adjusted according to the height of the installation of the crystallizer, and the bottom of the molten pool can be appropriately built thicker.https://www.vacfurnace.com/technology-frontiers/vacuum-heat-treatment-furnace-for-molds/

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